Is K59.03 a billable ICD-10-CM code?

Yes. K59.03 is a billable, specific ICD-10-CM code and is valid for submission on a claim.

Where does K59.03 sit in the tabular list?

Diseases of the digestive system (K00-K95), in the block Other diseases of intestines (K55-K64).

What cannot be coded together with K59.03?

K59.03 carries Excludes1 notes, which means the conditions they list can never be coded together with it on the same encounter. Some are written on the categories above K59.03 (K59.0, K59) and apply to it just the same.

K59.03

K59.03 — Drug induced constipation

Billable / specific codeICD-10-CM

K59.03 is a billable, specific ICD-10-CM code for drug induced constipation. It is valid for submission on a claim.

Use additional code

Add a secondary code to capture the detail described below.

code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5)

Excludes1 inherited from the categories above K59.03

These are not written on K59.03, but they bind it: a note on a category applies to every code beneath it. Billing K59.03 with anything listed here is a denial.

Written on K59.0 — Constipation

fecal impaction (K56.41)

Written on K59 — Other functional intestinal disorders

change in bowel habit NOS (R19.4)
intestinal malabsorption (K90.-)
psychogenic intestinal disorders (F45.8)

Excludes2 inherited from the categories above K59.03

Also inherited, and the opposite of Excludes1: these conditions are not part of K59.03, but a patient can have both, so you may code both.

Written on K59.0 — Constipation

incomplete defecation (R15.0)

Written on K59 — Other functional intestinal disorders

functional disorders of stomach (K31.-)

Risk adjustment

K59.03 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.

Medicare coverage

K59.03 is named in 4 Medicare coverage policies — 4 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.

A56394Billing and Coding: Colonoscopy and Sigmoidoscopy-Diagnostic
A56421Billing and Coding: CT of the Abdomen and Pelvis
A56632Billing and Coding: Colonoscopy/Sigmoidoscopy/Proctosigmoidoscopy
A56724Billing and Coding: Wireless Gastrointestinal Motility Monitoring Systems

How K59.03 is indexed

Coders do not find codes by browsing the tabular list — they look them up in the alphabetic index, under the word the physician wrote. These are the index entries that lead here, so you can see which chart wordings map to K59.03.

Constipation›drug-induced

Code history

K59.03 has not changed since FY2024 — no addition, revision or deletion across the three most recent ICD-10-CM releases.

Related codes at this level

Codes that share K59.0. If K59.03 is not quite right, the correct code is usually one of these.

Questions about K59.03

Is K59.03 a billable ICD-10-CM code?: Yes. K59.03 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does K59.03 sit in the tabular list?: Diseases of the digestive system (K00-K95), in the block Other diseases of intestines (K55-K64).
What cannot be coded together with K59.03?: K59.03 carries Excludes1 notes, which means the conditions they list can never be coded together with it on the same encounter. Some are written on the categories above K59.03 (K59.0, K59) and apply to it just the same.